First, foreign exchange brokers offer different prices, but settlement and borrowing (overnight interest is different, mainly depending on the settlement bank). There are opportunities for cross-platform arbitrage.

Second, the general platform, I have the impression that my boss talked about it in those years, but I am not sure that unless I can go to the bank to check different quotations, it is impossible for retail investors to forget it.

In addition, it is particularly important to explain the situation to your customers, customers, managers (or companies) to prevent them from eating your list instead of throwing it on the market.